package string;

import java.util.Scanner;

/*键盘录入字符串,统计大小写字母字符、数字字符出现的次数
其他字符不考虑
 */
public class Str5 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入一个字符串");
        String str = sc.next();
        int bigCount = 0;
        int smallCount = 0;
        int numberCount = 0;
        for (int i = 0; i < str.length(); i++) {
            char c = str.charAt(i);
            if(c>='a' && c<='z'){
                smallCount++;
            } else if (c>='A' && c<='Z') {
                bigCount++;
            } else if (c>='0' && c<='9') {
                numberCount++;
            }
        }
        System.out.println("小写字母有"+smallCount+"个");
        System.out.println("大写字母有"+bigCount+"个");
        System.out.println("数字字符有"+numberCount+"个");
    }


}
